[PATCH 0/1 SRU X/Z/A] Forbid Plantronics C310/C520-M reads sample rate

[Kai-Heng Feng]

BugLink: https://bugs.launchpad.net/bugs/1708499
BugLink: https://bugs.launchpad.net/bugs/1709282

[Impact]
[ 74.344674] usb 3-1: 2:1: cannot get freq at ep 0x1
...the same message will flood over dmesg.

[Test Case]
With this patch, ALSA stops trying to read sample rate from device, hence
no more error messages.

[Fix]
Make affected devices to use sample rate quirk.

[Regression Potential]
Minimal. This patch only affect two specific devices.

Kai-Heng Feng (1):
  ALSA: usb-audio: Add sample rate quirk for Plantronics C310/C520-M

 sound/usb/quirks.c | 2 ++
 1 file changed, 2 insertions(+)

-- 
2.14.1